Method of preparing print-rolls for cloth-printing.



w. H. HOPE. METHOD OF PREPARING PRINT ROLLS FOR CLOTH PRINTING.

Patented Feb.12,1918.

7 design from which colors the operator in WILLIAM H. HOPE, 0F PROVIDENCE, .RHODE ISLAND.

IMETHOD 0F PREPARING PRINT-ROLLS FOR. CLOTH-PRINTING.

Application filed July 22, 1916.

To all whom it may concern Be it known that I, WILLIAM citizen of the United States, residing at rovidence, in the county of Providence and State of Rhode Island, have invented a new and useful Improvement in Methods of reparing Print-Rolls for Clotl1P1'inting,

H. Horn, a

of which the following is a specification.

7 his invention relates to certain new and useful improvements in the method of pre paring for cloth printing,

the print roll is engraved before the same is etched.

It is known in the art of metal etching that upon the application of the acid, the acid will undercut the varnished or protected surface; therefore, in preparing a roll for the etching process the design is traced upon the roll by a cutter point in a suitable pantograph that removes the protecting surface of varnish and slightly cuts the design in the metal. In cases where the printing of cloth is in two or more abutting tracing the design from the pattern must leave sullicient space between the two colors forming the design to permit of such undercut by the acid as to bring the colors in contact, but not have them overlap one on the other in the printing. This requires great skill on the part of the operator of the pantograph.

The particular object of this invention is to provide a design or pattern of such nature that an ordinary operative can pro duce as good if not better work than is at present produced.

0 this end applicant proceeds as follows:

In the drawings- Figure l is a plan view of a portlon of a design or pattern, and

*ig. 2 is a similar view of a des1gn or pattern.

In proceeding in accordance with the present invention the designer outlines the design with a line 1 of such width as has been predetermined depending upon depth of the etching and the undercut.

Fig. 1 illustrates a design of a spot of one color to be printed upon cloth printed with any other color and illustrates a deep etching in which the printing roll will carry a as in printing goods eavy charge of color, having a pile surface.

Specification of Letters Patent.

Patented Feb. 12, T918. Serial No. 110,704.

The design, which may be of any configuration, it will be seen is outlined by a Wide one angle (always left to right) and then at a higher angle. By using lines of two difl'erent angles the outline of the design is more perfectly preserved. The roll for printing the background is engraved by the operators by bringing the stylus up to the outside of the outline and tracing the parallel lines 3. By the use of the design shown in Fig. 1 it will be seen that after the two rolls have been etched the acid will a printing machine, the two colors,one forming the *ig. 2 shows the design formed with a narrow outline 4: for engraving rolls from which to print goods of lighter weave or texture, as the rolls are not required to carry as heavy a charge of color. It is evident to one versed in the art that by forming the outline of the design of such predetermined width depending upon the depth of etching of the roll much more perfect print goods will be produced.

Iaving thus described my invention, what 0 aim as new and desire to secure by Letters Patent isl. The method of preparing print rolls for cloth printing, consisting in surrounding the design with a border line of predetermined width and conforming to the conguration of the design, such width to be equal to the amount of tie underetching of the acid, tracing a stylus along parallel lines across the design exclusive of its border line, operating a cutter on a roll according to the movements of the stylus and etching the roll.

2. The method of preparing print rolls for cloth printing, consisting in surrounding the design with a comformable border line of a predetermined width, tracing a stylus along two angularly related sets of parallel lines inwardly from the in accordance with the movements of the name to this specification in the presence of stylus within the border line, operating the two subscrlblng wltnesses.

cutter on a second r011 according to the WILLIAM H. HOPE. movements of the stylus outside the border Vitnesses: 5 line, and etching the cut rolls. ADA E. HAGERTY, In testimony whereof I have Signed my J. A. MILLER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, I). G. 

